Following its decision to effectively cancel the consumer release of the o3 reasoning model in February, OpenAI has now announced plans to release both o3 and its next-generation successor, o4-mini, within “a couple of weeks.”

In a recent post on X, OpenAI CEO Sam Altman revealed that this change in roadmap is linked to the upcoming GPT-5, which OpenAI has described as a unified model that integrates reasoning capabilities.

According to Altman, “[W]e are going to be able to make GPT-5 much better than we originally thought,” but the company also found the integration process to be more challenging than anticipated. He added, “[A]nd we want to make sure we have enough capacity to support what we expect to be unprecedented demand.”

Altman also mentioned that OpenAI expects to release GPT-5 “in a few months,” which is later than initially planned.

OpenAI has disclosed that it intends to offer unlimited chat access to GPT-5 at the “standard intelligence setting” once the model is available, subject to “abuse thresholds.” Additionally, subscribers to ChatGPT Plus will be able to run GPT-5 at a “higher level of intelligence,” while ChatGPT Pro subscribers will have access to an “even higher level of intelligence,” as previously stated by Altman.

Earlier this year, Altman mentioned in an X post that “[GPT-5] will incorporate voice, canvas, search, deep research, and more,” referring to the range of features recently launched in ChatGPT. He also emphasized that “[a] top goal for us is to unify [our] models by creating systems that can use all our tools, know when to think for a long time or not, and generally be useful for a very wide range of tasks.”